Thomas william helliwell



V T. w; HELLIWELL.

GLAZING BAR FOR SKYLIGHTS.

No. 412,750 Patented 001;. 15, 1889.

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WITNESSES N. PETERS, PhotwLilhogt-aphan wuhin tan. D4;

' astragal employed for supporting the lateral whereby the condensed orother water is of- UNITED STATES PAT LQEFJQE.

THOMAS WILLIAM HELLIWELL, OF BRIGHOUSE, OOUNTYOF YORK, ENGLAND.

GLAZlNG-BAR FOR SKY LIGHTS.

SPECIFICATION forming part of Letters Patent 120,412,750, dated October15, 1889. Application filed March 23, 1887- Serial No. 232,209. (Nomodel.) Patented in England June 8, 1886, No. 7,666.

To all whom it may concern:

Be it known that I, THOMAS WILLIAM HEL- LIWELL, a subject of the Queenof Great Britain, residing in Brighouse, in the county of York, England,have invented certain new and useful Improvements in Glazed Roofs, ofwhich the following is a specification.

This invention is the subj cot-matter of Letters Patent of Great BritainNo. 7,666, dated June 8, 1886.

My invention has reference to the bar or edges of the sheets of glass orother suitable material.

According to my present invention I construct the glazing-bar orastragal entirely of one piece of rolled metal, which combines in itselfthe central vertical rib or web by which the bar is stiffened againstvertical strains, the flanges or ledges on which the edges of the glassrest, and the channels or gutters beneath the glass for draining off thewater of condensation and leakage. In rolling these metal bars I makethe flanges on which the edges of the glass rest with two channels,

fectually caught and conveyed away. These channels and a shoulder arearranged side by side on each side of the central rib of the saidastragal, such channels being divided by a rib upon which the glassrests. This dividing-rib is made to project sufficiently high to keepthe glass clear of the top of the rib of the outer channels, whichdividing rib is formed with a groove for the purpose of receiving asuitable soft packing to lay the glass upon, so as to make the glazingmore airtight. Onto the central rib of the glazingbar or astragal I fixcertain saddles by rivets, solder, or other suitable means, such saddlesbeing made either in short lengths or continuous, but so placed thattheir lower projecting flanges do not touch the glass,but are a suitabledistance above, so as to allow the flanges of the cap to pass underthem. I then take a suitably-shaped cap or cover having projectingflanges, which cap I slide in endwise or force into position by makingthe parts spring or yield to pressure, so that the flanges thereof passunder the flanges of the saddle, so that the said flanges rest and bearupon the glass in such manner as to keep the glass down and prevent itfrom moving.

In the accompanying drawing is shown a perspective view of my improvedglazingbars.

Referring to the drawing, the glazing-bar or astragal (shown at A)consists of a solid rolled metallic bar having a central Vertical rib orand a horizontal flange b, which flange is made with two channels I andm on each side of the vertical rib a, as the drawing illustrates. Theledges or ribs 0 are made to project' a little higher than the parts 01e, for the purpose of supportingthe glass or other material B clear ofthe said parts 01 and e. Onto the central rib a, I place a saddle orcertain short lengths of metal or other suitable material O, which arefastened to the said rib by rivets or bolts passing horizontally throughthe central rib, as shown at n, or by solder or other means. The bottomflange of this saddle does not touch the upper surface of the sheet ofglass, but is clear of it, so as to allow the flanges of the cap D topass under. The cap is applied by sliding it endwise over the saddles,or it may be forced onto the saddles by causing the cap to yield topressure.

By the adoption of the double channel, as above described, the condensedor other water is more effectually caught and conveyed away than ispossible with only one channel. The form of cap for the double purposeof covering the central rib and for holding the glass in position iswell adapted for outside glazing, as it saves all outside painting.

The ledge c is formed with a groove to receive a little packing, asshown at f, for the glass to rest upon.

I claim as my invention- A glazing-bar or astragal made of solid rolledmetal, and combiningin asingle piece a central rib or web a,laterally-extending flanges having inner ledges c c, grooved 011 my namein the presence of two subscribing 10 their upper surfaces, so as tohold a yielding witnesses.

packing for supporting the glass, channels on m between the ledges c cand the central rib or web a, outer ledges d e, the upper edges of whichare below the plane of the glass, and

channelsll between said outer and inner ledges, substantially as setforth.

In witness whereof I have hereunto signed THOMAS WILLIAM HELLIWELL.

Witnesses:

A. B. CROSSLEY,

3 Commercial Street, Halifax. H. INGHAM,

3 South Parade, Halifax.

